JPS58221090A - Cryostat valve - Google Patents
Cryostat valveInfo
- Publication number
- JPS58221090A JPS58221090A JP10373782A JP10373782A JPS58221090A JP S58221090 A JPS58221090 A JP S58221090A JP 10373782 A JP10373782 A JP 10373782A JP 10373782 A JP10373782 A JP 10373782A JP S58221090 A JPS58221090 A JP S58221090A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pipe
- insulating material
- heat insulating
- clearance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
Abstract
Description
【発明の詳細な説明】 〔発明の属する技術分野〕 この発明は、低温弁に関する。[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to a cryogenic valve.
一般の低温弁では、弁体が、現に締切を行う流線形のブ
日ツクとそれに接続する外側パイプ内径よりわずかに細
いパイプよりなっている。このパイプが、外側パイプ内
径よりわずかに細いのは、この間隙で、ガスの対流が、
おこりガスの対流により弁ブロツク部への熱浸入が増大
することを、極力避けたいからである。しかしこの間隙
をなくすることも、ガスの対流を避けることも、現方式
では無理である。In a typical low-temperature valve, the valve body consists of a streamlined block that actually closes the valve and a pipe that is slightly thinner than the inner diameter of the outer pipe connected to it. The reason why this pipe is slightly narrower than the inner diameter of the outer pipe is because of this gap, which allows gas convection to
This is because it is desired to avoid as much as possible the increase in heat penetration into the valve block portion due to the convection of the generated gas. However, with the current method, it is impossible to eliminate this gap or avoid gas convection.
本発明は、外側パイプと弁体間隙でのガスの対流を減少
させ、弁部への熱浸入を極力小さくすることを目的とす
る。An object of the present invention is to reduce gas convection in the gap between the outer pipe and the valve body, and to minimize heat infiltration into the valve part.
外側パイプ内径に対して、弁体パイプの外径を従来のも
のよりも小さくシ、その間隙を断熱作用を有する物質で
満たした構成となっている。The outer diameter of the valve body pipe is smaller than the inner diameter of the outer pipe, and the gap therebetween is filled with a material that has a heat insulating effect.
本発明により、まず第一に低温部と常温部間のガスの対
流が、防止され熱浸入量が減少する。また、従来のよう
に外側パイプ内径よしわずかに細くしたパイプの外径寸
法の許容誤差を大きくとれ、製作が簡易になり、弁体パ
イプの外径を小さくできることにより全体重量の軽減も
行える。According to the present invention, first of all, gas convection between the low temperature section and the normal temperature section is prevented, thereby reducing the amount of heat penetration. In addition, unlike the conventional method, the outer diameter of the outer pipe is slightly narrower than the inner diameter of the outer pipe, allowing for a larger tolerance, which simplifies manufacturing, and by reducing the outer diameter of the valve body pipe, the overall weight can be reduced.
第１図に本発明に係る低温弁を示す。実際に開閉が行な
われるのは、弁部ａ・、αυ、 ａｅで、これを操作す
るのは、上部のハンドル（１）であり、この間をパイプ
（７）で接続している。この例では外側パイプ（９）と
内側パイプ（７）の間隙に断熱材（８）がつまっており
、液体窒素温度あるいは液体ヘリウム温度になる弁部（
ＩＬ （１１）、 （ＹｔＪと常温の操作部（１） ＃
（２） 、 （３） 。FIG. 1 shows a low temperature valve according to the present invention. The valve parts a, αυ, and ae are actually opened and closed, and they are operated by the handle (1) at the top, which are connected by a pipe (7). In this example, a heat insulating material (8) is filled in the gap between the outer pipe (9) and the inner pipe (7), and the valve part (which reaches the temperature of liquid nitrogen or liquid helium)
IL (11), (YtJ and normal temperature operation part (1) #
(2), (3).
（４）１５）を連結している。断熱材は繊維状（綿状）
のグラスクールを使用しているため、パイプ間の隙間で
、温度勾配方向（この図では上下方向）の空隙が極めて
小さく、対流はおこらなくなる。このため、常温部から
低温部への熱浸入量も非常に小さくなり、弁を設置した
ことによる低温機器の性能悪化も小さくカる。さらに、
パイプ（７）の径を細くしたことによりパイプの重量が
減少し、断熱材の重量は非常に小さいために、低温弁全
体重量の軽減にも効果がある。(4) 15) are connected. The insulation material is fibrous (cotton-like)
Because a glass cooler is used, the gaps between the pipes in the direction of the temperature gradient (in the vertical direction in this figure) are extremely small, and no convection occurs. For this reason, the amount of heat intrusion from the normal temperature section to the low temperature section is also extremely small, and the performance deterioration of the low temperature equipment due to the installation of the valve is also minimized. moreover,
By reducing the diameter of the pipe (7), the weight of the pipe is reduced, and since the weight of the heat insulating material is very small, it is also effective in reducing the overall weight of the low temperature valve.
第１図は、本発明に係る低温弁の一実施例を示す断面図
である。
（１）・・・ハンドル、（７）・・・弁部と操作部接続
用パイプ、（８）・・・断熱材、（９）・・・外側パイ
プ、αυ・・・弁シール部。FIG. 1 is a sectional view showing an embodiment of a low temperature valve according to the present invention. (1)...Handle, (7)...Pipe for connecting the valve section and operating section, (8)...Insulating material, (9)...Outside pipe, αυ...Valve seal section.
Claims (1)
徴とする低温弁。A low temperature valve characterized by filling the gap between the outer pipe and the valve body with a heat insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10373782A JPS58221090A (en) | 1982-06-18 | 1982-06-18 | Cryostat valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10373782A JPS58221090A (en) | 1982-06-18 | 1982-06-18 | Cryostat valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58221090A true JPS58221090A (en) | 1983-12-22 |
Family
ID=14361934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10373782A Pending JPS58221090A (en) | 1982-06-18 | 1982-06-18 | Cryostat valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58221090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9441744B2 (en) | 2010-12-23 | 2016-09-13 | Dana Canada Corporation | Valve apparatus |
-
1982
- 1982-06-18 JP JP10373782A patent/JPS58221090A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9441744B2 (en) | 2010-12-23 | 2016-09-13 | Dana Canada Corporation | Valve apparatus |
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